110-556: Total Operations Processing System ( TOPS ) is a computer system for managing railway locomotives and rolling stock , known for many years of use in the United Kingdom . TOPS was originally developed between the Southern Pacific Railroad (SP), Stanford University and IBM as a replacement for paper-based systems for managing rail logistics . A jointly-owned consultancy company, TOPS On-Line Inc. ,
220-469: A Canadian corporation. Following the successful IPO, CN has recorded impressive gains in its stock price, largely through an aggressive network rationalization and purchase of newer more fuel-efficient locomotives. Numerous branch lines were shed in the late 1990s across Canada, resulting in dozens of independent short line railway companies being established to operate former CN track that had been considered marginal. This network rationalization resulted in
330-690: A blue-plate tourist service, the Rocky Mountaineer , with fares well over double what the BCR coach fares had been. CN also announced in October 2003 an agreement to purchase Great Lakes Transportation (GLT), a holding company owned by Blackstone Group for US$ 380 million. GLT was the owner of Bessemer & Lake Erie Railroad , Duluth, Missabe and Iron Range Railway (DM&I), and the Pittsburgh & Conneaut Dock Company. The key instigator for
440-480: A conventional diesel or electric locomotive would be unsuitable. An example is maintenance trains on electrified lines when the electricity supply is turned off. Another use is in industrial facilities where a combustion-powered locomotive (i.e., steam- or diesel-powered ) could cause a safety issue due to the risks of fire, explosion or fumes in a confined space. Battery locomotives are preferred for mines where gas could be ignited by trolley-powered units arcing at
550-467: A core east–west freight railway stretching from Halifax to Chicago and Toronto to Vancouver and Prince Rupert . The railway also operated trains from Winnipeg to Chicago using trackage rights for part of the route south of Duluth. In addition to the rationalization in Canada, the company also expanded in a strategic north–south direction in the central United States . In 1998, in an era of mergers in
660-463: A diesel–electric locomotive ( E 2 original number Юэ 001/Yu-e 001) started operations. It had been designed by a team led by Yury Lomonosov and built 1923–1924 by Maschinenfabrik Esslingen in Germany. It had 5 driving axles (1'E1'). After several test rides, it hauled trains for almost three decades from 1925 to 1954. An electric locomotive is a locomotive powered only by electricity. Electricity
770-627: A great deal of public and political attention. Canada was one of many nations to engage in railway nationalization in order to safeguard critical transportation infrastructure during the First World War . In the early 20th century, many governments were taking a more interventionist role in the economy, foreshadowing the influence of economists like John Maynard Keynes . This political trend, combined with broader geo-political events, made nationalization an appealing choice for Canada. The Winnipeg General Strike of 1919 and allied involvement in
880-423: A ground and polished journal that is integral to the axle. The other side of the housing has a tongue-shaped protuberance that engages a matching slot in the truck (bogie) bolster, its purpose being to act as a torque reaction device, as well as a support. Power transfer from motor to axle is effected by spur gearing , in which a pinion on the motor shaft engages a bull gear on the axle. Both gears are enclosed in
990-410: A high ride quality and less electrical equipment; but EMUs have less axle weight, which reduces maintenance costs, and EMUs also have higher acceleration and higher seating capacity. Also some trains, including TGV PSE , TGV TMST and TGV V150 , use both non-passenger power cars and additional passenger motor cars. Locomotives occasionally work in a specific role, such as: The wheel arrangement of
1100-550: A higher power-to-weight ratio than DC motors and, because of the absence of a commutator , were simpler to manufacture and maintain. However, they were much larger than the DC motors of the time and could not be mounted in underfloor bogies : they could only be carried within locomotive bodies. In 1894, Hungarian engineer Kálmán Kandó developed a new type 3-phase asynchronous electric drive motors and generators for electric locomotives. Kandó's early 1894 designs were first applied in
1210-498: A larger locomotive named Galvani , exhibited at the Royal Scottish Society of Arts Exhibition in 1841. The seven-ton vehicle had two direct-drive reluctance motors , with fixed electromagnets acting on iron bars attached to a wooden cylinder on each axle, and simple commutators . It hauled a load of six tons at four miles per hour (6 kilometers per hour) for a distance of one and a half miles (2.4 kilometres). It
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#17327724167371320-434: A letter 'D', and electric locomotives with a letter 'E'. Thus, up to three locomotives could carry the same number. TOPS could not handle that, and it also required similar locomotives to be numbered in a consecutive series in terms of classification, so that they might be treated as a group. Sequentiality was all that was required but, given the need to renumber, it was decided to adopt a logical system for classification, and
1430-410: A liquid-tight housing containing lubricating oil. The type of service in which the locomotive is used dictates the gear ratio employed. Numerically high ratios are commonly found on freight units, whereas numerically low ratios are typical of passenger engines. Electricity is typically generated in large and relatively efficient generating stations , transmitted to the railway network and distributed to
1540-486: A locomotive describes how many wheels it has; common methods include the AAR wheel arrangement , UIC classification , and Whyte notation systems. In the second half of the twentieth century remote control locomotives started to enter service in switching operations, being remotely controlled by an operator outside of the locomotive cab. The main benefit is one operator can control the loading of grain, coal, gravel, etc. into
1650-613: A north–south NAFTA railway (in reference to the North American Free Trade Agreement ). CN was then feeding Canadian raw material exports into the U.S. heartland and beyond to Mexico through a strategic alliance with Kansas City Southern Railway (KCS). In 1999, CN and BNSF Railway , the second largest rail system in the U.S., announced their intent to merge, forming a new corporate entity North American Railways , headquartered in Montreal to conform to
1760-404: A number of important innovations including the use of high-pressure steam which reduced the weight of the engine and increased its efficiency. In 1812, Matthew Murray 's twin-cylinder rack locomotive Salamanca first ran on the edge-railed rack-and-pinion Middleton Railway ; this is generally regarded as the first commercially successful locomotive. Another well-known early locomotive
1870-528: A possible merger of the two companies. This was later rejected by the Government of Canada, whereupon CPR offered to purchase outright all of CN's lines from Ontario to Nova Scotia, while an unidentified U.S. railroad (rumoured to have been Burlington Northern Railroad ) would purchase CN's lines in western Canada. This too was rejected. In 1995, the entire company including its U.S. subsidiaries reverted to using CN exclusively. The CN Commercialization Act
1980-533: A quick succession of sales of the system to a variety of other American railroads, along with international customers, where it typically proved to be similarly beneficial. Selling TOPS to other operators helped offset the systems' development costs, so SP was keen to sell TOPS to third parties. The company was also motivated to protect its reputation, and thus provided assistance to other railroads interested in TOPS, to improve its chances of success. Some operators, such as
2090-403: A separate fourth rail for this purpose. The type of electrical power used is either direct current (DC) or alternating current (AC). Various collection methods exist: a trolley pole , which is a long flexible pole that engages the line with a wheel or shoe; a bow collector , which is a frame that holds a long collecting rod against the wire; a pantograph , which is a hinged frame that holds
2200-483: A short three-phase AC tramway in Evian-les-Bains (France), which was constructed between 1896 and 1898. In 1918, Kandó invented and developed the rotary phase converter , enabling electric locomotives to use three-phase motors whilst supplied via a single overhead wire, carrying the simple industrial frequency (50 Hz) single phase AC of the high voltage national networks. In 1896, Oerlikon installed
2310-522: A significantly larger workforce is required to operate and service them. British Rail figures showed that the cost of crewing and fuelling a steam locomotive was about two and a half times larger than the cost of supporting an equivalent diesel locomotive, and the daily mileage they could run was lower. Between about 1950 and 1970, the majority of steam locomotives were retired from commercial service and replaced with electric and diesel–electric locomotives. While North America transitioned from steam during
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#17327724167372420-636: A subclass, the number series extended to the next value of the third digit; thus, since there were more than 200 locomotives in class "47/4", subclasses "47/5" and "47/6" did not exist, and the next valid subclass by convention was "47/7" starting with "47 701". However, in some cases, the sequences do not match, e.g. 158/ 0 numbers start at 158 7 01. Locomotives are assigned classes 01–98: diesel locomotives 01–79 (originally 01–69), AC electric locomotives 80–96, departmental locos (those not in revenue-earning use) 97, and steam locomotives 98. DC electric locomotives were originally allocated classes 70–79 but this
2530-457: Is a rail transport vehicle that provides the motive power for a train . If a locomotive is capable of carrying a payload, it is usually rather referred to as a multiple unit , motor coach , railcar or power car ; the use of these self-propelled vehicles is increasingly common for passenger trains , but rare for freight trains . Traditionally, locomotives pulled trains from the front. However, push-pull operation has become common, where
2640-456: Is common to classify locomotives by their source of energy. The common ones include: A steam locomotive is a locomotive whose primary power source is a steam engine . The most common form of steam locomotive also contains a boiler to generate the steam used by the engine. The water in the boiler is heated by burning combustible material – usually coal, wood, or oil – to produce steam. The steam moves reciprocating pistons which are connected to
2750-416: Is supplied to moving trains with a (nearly) continuous conductor running along the track that usually takes one of three forms: an overhead line , suspended from poles or towers along the track or from structure or tunnel ceilings; a third rail mounted at track level; or an onboard battery . Both overhead wire and third-rail systems usually use the running rails as the return conductor but some systems use
2860-522: Is that these power cars are integral part of a train and are not adapted for operation with any other types of passenger coaches. On the other hand, many high-speed trains such as the Shinkansen network never use locomotives. Instead of locomotive-like power-cars, they use electric multiple units (EMUs) or diesel multiple units (DMUs) – passenger cars that also have traction motors and power equipment. Using dedicated locomotive-like power cars allows for
2970-444: Is written in its own programming language, TOPSTRAN (not strictly speaking a separate language but a set of IBM Assembler macros), and it is increasingly hard to find and train developers to maintain it. The division of British Rail and privatisation has also hurt TOPS, because it was not designed for that purpose; some freight operating companies do not keep information as up to date as they should. Attempts have been made to 'skin'
3080-605: The CN Commercialization Act of 1995. The merger announcement by CN's Paul Tellier and BNSF's Robert Krebs was greeted with skepticism by the U.S. government's Surface Transportation Board (STB), and protested by other major North American rail companies, namely CPR and Union Pacific Railroad (UP). Rail customers also denounced the proposed merger, following the confusion and poor service sustained in southeastern Texas in 1998 following UP's purchase of Southern Pacific Railroad two years earlier. In response to
3190-494: The Canadian National Railway , opted to introduce TOPS as an interim measure while its own bespoke system was developed as a long-term successor. During the late 1960s, British Rail (BR) was looking for ways to increase efficiency, particularly of its declining freight operations, and identified a computer-based system as a key tool for improving both planning and control. The specific requirements included
3300-591: The Connecticut River valley from Quebec to Long Island Sound ; and the Berlin subdivision to Portland, Maine , known informally as the Grand Trunk Eastern , sold to a short-line operator in 1989. In 1992, a new management team led by ex-federal government bureaucrats, Paul Tellier and Michael Sabia , started preparing CN for privatization by emphasizing increased productivity. This
3410-590: The EMD FL9 and Bombardier ALP-45DP There are three main uses of locomotives in rail transport operations : for hauling passenger trains, freight trains, and for switching (UK English: shunting). Freight locomotives are normally designed to deliver high starting tractive effort and high sustained power. This allows them to start and move long, heavy trains, but usually comes at the cost of relatively low maximum speeds. Passenger locomotives usually develop lower starting tractive effort but are able to operate at
TOPS - Misplaced Pages Continue
3520-461: The Heath cabinet , which was given in October 1971. The decision was justified by a belief that TOPS would enable BR's freight operations to become profitable. The cost of BR's TOPS implementation included £5.6m of capital costs, development costs of £5.7m, and equipment rental costs of £22.5m between 1972 and 1980. Aside from the computers themselves, and suitably trained staff to operate them, perhaps
3630-530: The Illinois Central . CN is a public company with 22,600 employees and, as of July 2024 , a market cap of approximately US$ 75 billion. CN was government-owned, as a Canadian Crown corporation , from its founding in 1919 until being privatized in 1995. As of 2019 , Bill Gates was the largest single shareholder of CN stock, owning a 14.2% interest through Cascade Investment and his own Bill and Melinda Gates Foundation . From 1919 to 1978,
3740-674: The Medieval Latin motivus 'causing motion', and is a shortened form of the term locomotive engine , which was first used in 1814 to distinguish between self-propelled and stationary steam engines . Prior to locomotives, the motive force for railways had been generated by various lower-technology methods such as human power, horse power, gravity or stationary engines that drove cable systems. Few such systems are still in existence today. Locomotives may generate their power from fuel (wood, coal, petroleum or natural gas), or they may take power from an outside source of electricity. It
3850-785: The Midwestern and Southern United States . CN is Canada's largest railway, in terms of both revenue and the physical size of its rail network, spanning Canada from the Atlantic coast in Nova Scotia to the Pacific coast in British Columbia across approximately 20,000 route miles (32,000 km) of track. In the late 20th century, CN gained extensive capacity in the United States by taking over such railroads as
3960-585: The Russian Revolution seemed to validate the continuing process. The need for a viable rail system was paramount in a time of civil unrest and foreign military action. Bessemer & Lake Erie Railroad The B&LE was acquired with the purchase of Great Lakes Transportation and the DM&;IR. British Columbia Railway In 2003, BCOL sold to Canadian National and leased the railroad to CN for 60 years. Central Vermont Railway Central Vermont
4070-715: The South Shore in the Montreal area (the latter lasted without any public subsidy until 1986). The Newfoundland mixed trains lasted until 1988, while the Montreal commuter trains are now operated by Montreal's EXO . On November 17, 1995, the Government of Canada privatized CN. Over the next decade, the company expanded significantly into the United States, purchasing Illinois Central Railroad and Wisconsin Central Transportation , among others. The excessive construction of railway lines in Canada led to significant financial difficulties striking many of them, in
4180-500: The traction motors and axles adapts the power output to the rails for freight or passenger service. Passenger locomotives may include other features, such as head-end power (also referred to as hotel power or electric train supply) or a steam generator . Some locomotives are designed specifically to work steep grade railways , and feature extensive additional braking mechanisms and sometimes rack and pinion. Steam locomotives built for steep rack and pinion railways frequently have
4290-478: The 1950s and 1960s, it was increasingly recognised that the adoption of computer -based management systems could provide substantial benefits in various operations, particularly those involving logistics . Consequently, by the 1960s, various railways in various countries, including Japan , Canada , and the United States had begun to develop and introduce such systems. Amongst the organisations that adopted
4400-408: The 1950s, and continental Europe by the 1970s, in other parts of the world, the transition happened later. Steam was a familiar technology that used widely-available fuels and in low-wage economies did not suffer as wide a cost disparity. It continued to be used in many countries until the end of the 20th century. By the end of the 20th century, almost the only steam power remaining in regular use around
4510-648: The 40 km Burgdorf—Thun line , Switzerland. The first implementation of industrial frequency single-phase AC supply for locomotives came from Oerlikon in 1901, using the designs of Hans Behn-Eschenburg and Emil Huber-Stockar ; installation on the Seebach-Wettingen line of the Swiss Federal Railways was completed in 1904. The 15 kV, 50 Hz 345 kW (460 hp), 48 tonne locomotives used transformers and rotary converters to power DC traction motors. Italian railways were
TOPS - Misplaced Pages Continue
4620-658: The Southern Pacific. The project gained the name Total Operations Processing System , or TOPS , and its development was handled by a specially established consultancy company, TOPS On-Line Inc. , which was 80 percent owned by SP with the remaining stake held by IBM. TOPS was to take all the paperwork associated with a locomotive or rolling stock - its maintenance history, its allocation to division and depot and duty, its status, its location, and much more - and keep it in computer form, constantly updated by terminals at every maintenance facility. On paper, this information
4730-409: The TOPS system actually stored and displayed them without the space: "47401". Sub-classifications were indicated in the TOPS system with a slash and a subclass number, e.g. "47/4". It was convention, though not enforced within the TOPS system, that subclass numbers were boundaries in the locomotive numbering system, such that class "47/4" started with number "47 401". If there were more than 99 numbers in
4840-511: The U.S. rail industry, CN bought the Illinois Central Railroad (IC), which connected the already existing lines from Vancouver , British Columbia, to Halifax , Nova Scotia, with a line running from Chicago, Illinois, to New Orleans , Louisiana. This single purchase of IC transformed CN's entire corporate focus from being an east–west uniting presence within Canada (sometimes to the detriment of logical business models) into
4950-510: The UK to discuss and evaluate BR's existing practices, along with corresponding visits to the USA to witness SP's operations, before both sides concluded that TOPS was a viable option. Groundwork on TOPS' financial case had commenced in the summer of 1970, during which a four-year timescale for implementation had emerged as the preferred option. From an analysis performed in 1971, it was found that, even in
5060-752: The United Kingdom was a petrol–mechanical locomotive built by the Maudslay Motor Company in 1902, for the Deptford Cattle Market in London . It was an 80 hp locomotive using a three-cylinder vertical petrol engine, with a two speed mechanical gearbox. Diesel locomotives are powered by diesel engines . In the early days of diesel propulsion development, various transmission systems were employed with varying degrees of success, with electric transmission proving to be
5170-813: The boiler tilted relative to the locomotive frame , so that the boiler remains roughly level on steep grades. Locomotives are also used on some high-speed trains. Some of them are operated in push-pull formation with trailer control cars at another end of a train, which often have a cabin with the same design as a cabin of locomotive; examples of such trains with conventional locomotives are Railjet and Intercity 225 . Also many high-speed trains, including all TGV , many Talgo (250 / 350 / Avril / XXI), some Korea Train Express , ICE 1 / ICE 2 and Intercity 125 , use dedicated power cars , which do not have places for passengers and technically are special single-ended locomotives. The difference from conventional locomotives
5280-540: The cars. In addition, the same operator can move the train as needed. Thus, the locomotive is loaded or unloaded in about a third of the time. [REDACTED] Media related to Locomotives at Wikimedia Commons Canadian National Railway The Canadian National Railway Company ( French : Compagnie des chemins de fer nationaux du Canada ) ( reporting mark CN ) is a Canadian Class I freight railway headquartered in Montreal, Quebec , which serves Canada and
5390-460: The center section would have a 200-ton reactor chamber and steel walls 5 feet thick to prevent releases of radioactivity in case of accidents. He estimated a cost to manufacture atomic locomotives with 7000 h.p. engines at approximately $ 1,200,000 each. Consequently, trains with onboard nuclear generators were generally deemed unfeasible due to prohibitive costs. In 2002, the first 3.6 tonne, 17 kW hydrogen (fuel cell) -powered mining locomotive
5500-407: The collecting shoes against the wire in a fixed geometry; or a contact shoe , which is a shoe in contact with the third rail. Of the three, the pantograph method is best suited for high-speed operation. Electric locomotives almost universally use axle-hung traction motors, with one motor for each powered axle. In this arrangement, one side of the motor housing is supported by plain bearings riding on
5610-455: The collection shoes, or where electrical resistance could develop in the supply or return circuits, especially at rail joints, and allow dangerous current leakage into the ground. Battery locomotives in over-the-road service can recharge while absorbing dynamic-braking energy. The first known electric locomotive was built in 1837 by chemist Robert Davidson of Aberdeen , and it was powered by galvanic cells (batteries). Davidson later built
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#17327724167375720-649: The deal was the fact that since the Wisconsin Central purchase, CN was required to use DM&I trackage rights for a short 18 km (11 mi) "gap" near Duluth, Minnesota , on the route between Chicago and Winnipeg. To purchase this short section, CN was told by GLT it would have to purchase the entire company. Also included in GLT's portfolio were eight Great Lakes vessels for transporting bulk commodities such as coal and iron ore as well as various port facilities. Following Surface Transportation Board approval for
5830-405: The driving wheels by means of connecting rods, with no intervening gearbox. This means the combination of starting tractive effort and maximum speed is greatly influenced by the diameter of the driving wheels. Steam locomotives intended for freight service generally have smaller diameter driving wheels than passenger locomotives. In diesel–electric and electric locomotives the control system between
5940-524: The early 1950s, Lyle Borst of the University of Utah was given funding by various US railroad line and manufacturers to study the feasibility of an electric-drive locomotive, in which an onboard atomic reactor produced the steam to generate the electricity. At that time, atomic power was not fully understood; Borst believed the major stumbling block was the price of uranium. With the Borst atomic locomotive,
6050-492: The early 1980s, it has been forbidden for them to have the same numbers as locomotives, but before then duplication was possible because they carried a prefix letter, which was considered part of the number. More recent EMU deliveries have six-figure coach numbers. TOPS has become outdated in recent decades. It is a text-terminal , mainframe-driven system; which is regarded as not very user-friendly, and hard to use compared with contemporary computer user-interfaces. In addition, it
6160-437: The event of the most pessimistic assumptions being true, TOPS' introduction retained a healthy gain in net value of £34m per annum. Suitably convinced of its benefits, BR's board opted to purchase the system, along with the source code (as was typical in those days for such a large mainframe-based system) during June 1971. Due to its foreign origins, the purchase of an IBM System/360 mainframe to operate TOPS had to be approved by
6270-520: The first commercial example of the system on the Lugano Tramway . Each 30-tonne locomotive had two 110 kW (150 hp) motors run by three-phase 750 V 40 Hz fed from double overhead lines. Three-phase motors run at constant speed and provide regenerative braking , and are well suited to steeply graded routes, and the first main-line three-phase locomotives were supplied by Brown (by then in partnership with Walter Boveri ) in 1899 on
6380-514: The first in the world to introduce electric traction for the entire length of a main line rather than just a short stretch. The 106 km Valtellina line was opened on 4 September 1902, designed by Kandó and a team from the Ganz works. The electrical system was three-phase at 3 kV 15 Hz. The voltage was significantly higher than used earlier and it required new designs for electric motors and switching devices. The three-phase two-wire system
6490-442: The first phase of TOPS involved around 660 man-years of effort, with eight years passing between the start of work and it being declared operational during mid-1968. Despite the lengthy development time, TOPS quickly proved to be a success for SP; clerks often observed that jobs which had taken half a day and dozens of telephone calls could instead be completed in under five minutes using TOPS. The success of TOPS with SP soon led to
6600-543: The five- or six-digit TOPS number was divided into two parts. No class of locomotive or multiple unit numbered over 1,000 examples, so the last three digits were used for the individual number between 001 and 999 in that class, although Class 43 goes down to 000, that being the number of the only remaining HST prototype power car. The first two or three digits were used to denote the class of locomotive or multiple unit. The numbers were often written in two space separated groups, such as "47 401" to highlight that division, but
6710-400: The high speeds required to maintain passenger schedules. Mixed-traffic locomotives (US English: general purpose or road switcher locomotives) meant for both passenger and freight trains do not develop as much starting tractive effort as a freight locomotive but are able to haul heavier trains than a passenger locomotive. Most steam locomotives have reciprocating engines, with pistons coupled to
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#17327724167376820-480: The implementation of TOPS was undertaken without any significant adverse reaction in terms of industrial relations or senior management. The adoption of the TOPS system during the early 1970s led to several changes in working practices across Britain's railway network. Hitherto, locomotives had been numbered in three different series. Steam locomotives carried unadorned numbers up to five digits long. Diesel locomotives carried one to four-digit numbers prefixed with
6930-441: The locomotive's main wheels, known as the " driving wheels ". Both fuel and water supplies are carried with the locomotive, either on the locomotive itself, in bunkers and tanks , (this arrangement is known as a " tank locomotive ") or pulled behind the locomotive, in tenders , (this arrangement is known as a " tender locomotive "). The first full-scale working railway steam locomotive was built by Richard Trevithick in 1802. It
7040-675: The locomotives were retired shortly afterward. All four locomotives were donated to museums, but one was scrapped. The others can be seen at the Boone and Scenic Valley Railroad , Iowa, and at the Western Railway Museum in Rio Vista, California. The Toronto Transit Commission previously operated a battery electric locomotive built by Nippon Sharyo in 1968 and retired in 2009. London Underground regularly operates battery–electric locomotives for general maintenance work. In
7150-569: The more effective utilisation of freight rolling stock, better pre-planning of terminal and marshalling yard operations, better alignment of specific consignments to specific services, prompt response to customer location-related requests. BR planners realised early on that it would be quicker and cheaper to buy an existing system, rather than develop one locally, even if that breached the British Government 's requirement for nationalised industries to ' Buy British '. Various systems around
7260-494: The most popular. In 1914, Hermann Lemp , a General Electric electrical engineer, developed and patented a reliable direct current electrical control system (subsequent improvements were also patented by Lemp). Lemp's design used a single lever to control both engine and generator in a coordinated fashion, and was the prototype for all diesel–electric locomotive control. In 1917–18, GE produced three experimental diesel–electric locomotives using Lemp's control design. In 1924,
7370-441: The most technically challenging aspect impacting implementation was telecommunications , necessary to bring the system's geographically disparate elements together. The implementation phase was greatly assisted by data processing experts provided by SP. It was at the urging of SP's specialists that BR omitted the originally-sought volume acceptance feature, as it was considered to be impractical. The operational headquarters for TOPS
7480-777: The northernmost trackage of the contiguous North American railway network. Since being purchased by CN in 2006, it has been officially known as the Meander River Subdivision. Newfoundland Railway On 31 March 1949, CNR acquired the assets of the Newfoundland Railway , which in 1979 were reorganized into Terra Transport . CN officially abandoned its rail network in Newfoundland on 1 October 1988. Savage Alberta Railway On December 1, 2006, CN announced that it had purchased Savage Alberta Railway for $ 25 million and that it had begun operating
7590-437: The owner of EWS , the principal freight train operator in the United Kingdom. On May 13, 2003, the provincial government of British Columbia announced the provincial Crown corporation , BC Rail (BCR), would be sold with the winning bidder receiving BCR's surface operating assets (locomotives, cars, and service facilities). The provincial government is retaining ownership of the tracks and right-of-way. On November 25, 2003, it
7700-688: The power supply of choice for subways, abetted by the Sprague's invention of multiple-unit train control in 1897. The first use of electrification on a main line was on a four-mile stretch of the Baltimore Belt Line of the Baltimore & Ohio (B&O) in 1895 connecting the main portion of the B&;O to the new line to New York through a series of tunnels around the edges of Baltimore's downtown. Three Bo+Bo units were initially used, at
7810-771: The rail industry, shippers, and political pressure, the STB placed a 15-month moratorium on all rail-industry mergers, effectively scuttling CN-BNSF plans. Both companies dropped their merger applications and have never refiled. After the STB moratorium expired, CN purchased Wisconsin Central (WC) in 2001, which allowed the company's rail network to encircle Lake Michigan and Lake Superior , permitting more efficient connections from Chicago to western Canada. The deal also included Canadian WC subsidiary Algoma Central Railway (ACR), giving access to Sault Ste. Marie and Michigan's Upper Peninsula . The purchase of Wisconsin Central also made CN
7920-918: The railway the same day. TransX Group of Companies In 2018, CN acquired the Winnipeg-based TransX Group of Companies. Transx continues to operate independently. Wisconsin Central Railroad In January 2001, CN acquired the WC for $ 800 million. CN's railway network in the late 1980s consisted of the company's Canadian trackage, along with the following U.S. subsidiary lines: Grand Trunk Western Railroad (GTW) operating in Michigan , Indiana , and Illinois ; Duluth, Winnipeg and Pacific Railway (DWP) operating in Minnesota ; Central Vermont Railway (CV) operating down
8030-661: The railway was known as "Canadian National Railways" (CNR). The Canadian National Railways (CNR) was incorporated on June 6, 1919, comprising several railways that had become bankrupt and fallen into Government of Canada hands, along with some railways already owned by the government. Primarily a freight railway, CN also operated passenger services until 1978, when they were assumed by Via Rail . The only passenger services run by CN after 1978 were several mixed trains (freight and passenger) in Newfoundland , and several commuter trains both on CN's electrified routes and towards
8140-572: The sale of BC Rail. Also contested was the economic stimulus package the government gave cities along the BC Rail route. Some saw it as a buy-off to get the municipalities to cooperate with the lease, though the government asserted the package was intended to promote economic development along the corridor. Passenger service along the route had been ended by BC Rail a few years earlier due to ongoing losses resulting from deteriorating service. The cancelled passenger service has subsequently been replaced by
8250-425: The south end of the electrified section; they coupled onto the locomotive and train and pulled it through the tunnels. DC was used on earlier systems. These systems were gradually replaced by AC. Today, almost all main-line railways use AC systems. DC systems are confined mostly to urban transit such as metro systems, light rail and trams, where power requirement is less. The first practical AC electric locomotive
8360-556: The subsequent classes; 300–399 are overhead AC units (including AC/DC dual-voltage units), while Southern Region DC third rail EMUs are 400–499, other DC EMUs 500–599. More recently, new electric multiple units and bi-mode multiple units have been given the 700 series and new high-speed units have been given the 800 series. Selected numbers in the 900 series have been used for departmental multiple units, mostly converted from former passenger units. Coaching stock and individual multiple unit cars are allocated five-digit numbers; since
8470-423: The system was more or less finalized at that point. However, certain related lawsuits were not resolved until as late as 1936. Canadian National Railways was born out of both wartime and domestic urgency. Until the rise of the personal automobile and creation of taxpayer-funded all-weather highways, railways were the only viable long-distance land transportation available in Canada. As such, their operation consumed
8580-631: The system with a more user-friendly interface, called TOPS 2000; in addition, there are other parallel systems now, such as TRUST , Genius and the Mobile Consisting Application (since 2019 marketed as part of the 3Squared RailSmart software suite ), but none has yet fully supplanted the TOPS system. This is a typical report that a TOPS clerk could generate. The train in question is a 25 wagon freight train travelling from Over & Wharton , near Winsford , to Reading West Junction, Berkshire . Locomotive A locomotive
8690-528: The technology early on was the Southern Pacific Railroad (SP). During the late 1950s, SP entered into discussions with the American technology company IBM about implementing its technology for rail management purposes. IBM repurposed much of their work on the US Air Force's SAGE project, designed to direct interceptor aircraft against approaching Soviet nuclear bombers, to instead serve the needs of
8800-454: The train may have a locomotive (or locomotives) at the front, at the rear, or at each end. Most recently railroads have begun adopting DPU or distributed power. The front may have one or two locomotives followed by a mid-train locomotive that is controlled remotely from the lead unit. The word locomotive originates from the Latin loco 'from a place', ablative of locus 'place', and
8910-464: The trains. Some electric railways have their own dedicated generating stations and transmission lines but most purchase power from an electric utility . The railway usually provides its own distribution lines, switches and transformers . Electric locomotives usually cost 20% less than diesel locomotives, their maintenance costs are 25–35% lower, and cost up to 50% less to run. The earliest systems were DC systems. The first electric passenger train
9020-414: The transaction shortly thereafter. The EJ&E lines create a bypass around the western side of heavily congested Chicago-area rail hub and its conversion to use for mainline freight traffic is expected to alleviate substantial bottlenecks for both regional and intercontinental rail traffic subject to lengthy delays entering and exiting Chicago freight yards. The purchase of the lightly used EJ&E corridor
9130-460: The transaction, CN completed the purchase of GLT on May 10, 2004. On December 24, 2008, the STB approved CN's purchase for $ 300 million of the principal lines of the Elgin, Joliet & Eastern Railway Company (EJ&E) ( reporting mark EJE) from the U.S. Steel Corporation , originally announced on September 27, 2007. The STB's decision was to become effective on January 23, 2009, with a closure of
9240-623: The two railroads were formally amalgamated into the CN system. Iowa Northern Railway In 2023, CN acquired the Iowa Northern Railway , but the transaction is awaiting approval by the Surface Transportation Board (STB). Mackenzie Northern Railway In 2006, CN acquired Mackenzie Northern Railway , previously purchased by RailAmerica . This purchase allowed CN to increase their network footprint and hold
9350-433: The world was on heritage railways . Internal combustion locomotives use an internal combustion engine , connected to the driving wheels by a transmission. They typically keep the engine running at a near-constant speed whether the locomotive is stationary or moving. Internal combustion locomotives are categorised by their fuel type and sub-categorised by their transmission type. The first internal combustion rail vehicle
9460-463: The world were explored, such as France's Gestion Centralisée du Trafic Marchandises (GCTM) and Canada's Traffic Reporting and Control System (TRACS), but found this to be ill-suited to BR's requirements; in fact, no existing system in the world satisfied them in full. However, SP's TOPS system met many - but not all - of the outstanding requirements. Starting in June 1970, several delegations from SP came to
9570-555: The years leading up to 1920: The Canadian National Railway Company then evolved through the following steps: GTR management and shareholders opposed to nationalization took legal action, but after several years of arbitration, the GTR was finally absorbed into the CNR on January 30, 1923. Although several smaller independent railways would be added to the CNR in subsequent years as they went bankrupt or it became politically expedient to do so,
9680-705: Was Puffing Billy , built 1813–14 by engineer William Hedley for the Wylam Colliery near Newcastle upon Tyne . This locomotive is the oldest preserved, and is on static display in the Science Museum, London. George Stephenson built Locomotion No. 1 for the Stockton & Darlington Railway in the north-east of England, which was the first public steam railway in the world. In 1829, his son Robert built The Rocket in Newcastle upon Tyne. Rocket
9790-502: Was a kerosene -powered draisine built by Gottlieb Daimler in 1887, but this was not technically a locomotive as it carried a payload. The earliest gasoline locomotive in the western United States was built by the Best Manufacturing Company in 1891 for San Jose and Alum Rock Railroad . It was only a limited success and was returned to Best in 1892. The first commercially successful petrol locomotive in
9900-435: Was achieved largely through aggressive cuts to the company's management structure, widescale layoffs in its workforce and continued abandonment or sale of its branch lines. In 1993 and 1994, the company experimented with a rebranding that saw the names CN , Grand Trunk Western , and Duluth, Winnipeg, and Pacific replaced under a collective CN North America moniker. In this time, CPR and CN entered into negotiations regarding
10010-488: Was announced CN's bid of CA$ 1 billion would be accepted over those of CPR and several U.S. companies. The transaction was closed effective July 15, 2004. Many opponents – including CPR – accused the government and CN of rigging the bidding process, though this has been denied by the government. Documents relating to the case are under court seal, as they are connected to a parallel marijuana grow-op investigation connected with two senior government aides also involved in
10120-789: Was constructed for the Coalbrookdale ironworks in Shropshire in England though no record of it working there has survived. On 21 February 1804, the first recorded steam-hauled railway journey took place as another of Trevithick's locomotives hauled a train from the Penydarren ironworks, in Merthyr Tydfil , to Abercynon in South Wales. Accompanied by Andrew Vivian , it ran with mixed success. The design incorporated
10230-671: Was demonstrated in Val-d'Or , Quebec . In 2007 the educational mini-hydrail in Kaohsiung , Taiwan went into service. The Railpower GG20B finally is another example of a fuel cell–electric locomotive. There are many different types of hybrid or dual-mode locomotives using two or more types of motive power. The most common hybrids are electro-diesel locomotives powered either from an electricity supply or else by an onboard diesel engine . These are used to provide continuous journeys along routes that are only partly electrified. Examples include
10340-471: Was designed by Charles Brown , then working for Oerlikon , Zürich. In 1891, Brown had demonstrated long-distance power transmission, using three-phase AC , between a hydro-electric plant at Lauffen am Neckar and Frankfurt am Main West, a distance of 280 km. Using experience he had gained while working for Jean Heilmann on steam–electric locomotive designs, Brown observed that three-phase motors had
10450-476: Was difficult to keep track of, awkward to keep up to date, and time-consuming to query, requiring many telephone calls. Computerizing this information enabled a railroad to keep better track of its assets, and thus to make better use of them. TOPS was a relatively complex system for the era, being not only comprehensive but required to operate in real time. Accordingly, development was particularly time-consuming; according to BR Chief Operations Manager Robert Arnott,
10560-409: Was enacted into law on July 13, 1995, and by November 28, 1995, the Government of Canada had completed an initial public offering (IPO) and transferred all of its shares to private investors. Two key prohibitions in this legislation include, 1) that no individual or corporate shareholder may own more than 15% of CN, and 2) that the company's headquarters must remain in Montreal , thus maintaining CN as
10670-602: Was entered into, and won, the Rainhill Trials . This success led to the company emerging as the pre-eminent early builder of steam locomotives used on railways in the UK, US and much of Europe. The Liverpool & Manchester Railway , built by Stephenson, opened a year later making exclusive use of steam power for passenger and goods trains . The steam locomotive remained by far the most common type of locomotive until after World War II . Steam locomotives are less efficient than modern diesel and electric locomotives, and
10780-448: Was established in 1960 with the goal of implementing TOPS, as well as selling it to third parties. Development was protracted, requiring around 660 man-years of effort to produce a releasable build. During mid-1968, the first phase of the system was introduced on the SP, and quickly proved its advantages over the traditional methods practiced prior to its availability. In addition to SP, TOPS
10890-452: Was established in an existing railway office block in close proximity to BR's corporate headquarters. The building had to be extensively refitted for the scheme, the top floor being turned into an open-plan office for housing planning and development work, while the computing equipment and telecommunications gear was accommodated across two separate floors below; the latter requiring a controlled climate for reliable operation. According to Amott,
11000-607: Was merged with Central Vermont in 1971 with the creation of the Grand Trunk Corporation. In 1991 the GTW was merged with CN under the "North America" consolidation program. Many of GTWs locomotives and rolling stock would be repainted and the motive power would get the new CN scheme. Illinois Central Railroad In 1998, IC was purchased by CN, which also acquired the Chicago Central in the deal. A year later,
11110-522: Was modified in 2011 (see British Rail locomotive and multiple unit numbering and classification ); the sole relic of this is Class 73 which continues unrenumbered, probably because it can be considered equally a diesel locomotive as it is a DC electric. One oddity was the inclusion of British Rail's shipping fleet in the system as Class 99. Diesel multiple units (DMUs) with mechanical or hydraulic transmission are classified 100–199, with electric transmission 200–299. Electric multiple units (EMUs) are given
11220-645: Was nationalized in 1918 and consolidated into the Grand Trunk Western in 1971 with the creation of the Grand Trunk Corporation. Duluth Missabe & Iron Range Railroad The DM&IR was purchased by Great Lakes Transportation and in 2011 the DM&IR was merged into CN's Wisconsin Central Subsidiary. The DM&IR was acquired at the same time as the Bessemer & Lake Erie Railroad. Duluth Winnipeg & Pacific Railroad The DWP
11330-570: Was nationalized with CN in 1918 and became a part of CN's Grand Trunk Corporation in 1971. In 2011 the DWP was merged into the larger Wisconsin Central Subsidiary of CN. Elgin, Joliet and Eastern Railway In 2009, CN acquired the Elgin, Joliet and Eastern Railway to assist with traffic congestion in Chicago and the surrounding area. In 2013 EJ&E was merged into the greater Wisconsin Central Subsidiary of CN. Grand Trunk Western Railroad The GTW
11440-426: Was presented by Werner von Siemens at Berlin in 1879. The locomotive was driven by a 2.2 kW, series-wound motor, and the train, consisting of the locomotive and three cars, reached a speed of 13 km/h. During four months, the train carried 90,000 passengers on a 300-metre-long (984 feet) circular track. The electricity (150 V DC) was supplied through a third insulated rail between the tracks. A contact roller
11550-500: Was reasoned to be both cheaper and quicker to implement; it was noted, however, that TOPS was not capable of performing all desired functions. Since its implementation during the mid 1970s, both BR and its successors have continued to operate the system. SP itself has developed a newer system called the Terminal Information Processing System (TIPS), which replaced TOPS entirely during 1980. During
11660-943: Was tested on the Edinburgh and Glasgow Railway in September of the following year, but the limited power from batteries prevented its general use. Another example was at the Kennecott Copper Mine , Latouche, Alaska , where in 1917 the underground haulage ways were widened to enable working by two battery locomotives of 4 + 1 ⁄ 2 tons. In 1928, Kennecott Copper ordered four 700-series electric locomotives with on-board batteries. These locomotives weighed 85 tons and operated on 750-volt overhead trolley wire with considerable further range whilst running on batteries. The locomotives provided several decades of service using Nickel–iron battery (Edison) technology. The batteries were replaced with lead-acid batteries , and
11770-650: Was the first in the world in regular service powered from an overhead line. Five years later, in the U.S. electric trolleys were pioneered in 1888 on the Richmond Union Passenger Railway , using equipment designed by Frank J. Sprague . The first electrically worked underground line was the City & South London Railway , prompted by a clause in its enabling act prohibiting use of steam power. It opened in 1890, using electric locomotives built by Mather & Platt . Electricity quickly became
11880-546: Was used on several railways in Northern Italy and became known as "the Italian system". Kandó was invited in 1905 to undertake the management of Società Italiana Westinghouse and led the development of several Italian electric locomotives. A battery–electric locomotive (or battery locomotive) is an electric locomotive powered by onboard batteries ; a kind of battery electric vehicle . Such locomotives are used where
11990-638: Was used to collect the electricity. The world's first electric tram line opened in Lichterfelde near Berlin, Germany, in 1881. It was built by Werner von Siemens (see Gross-Lichterfelde Tramway and Berlin Straßenbahn ). The Volk's Electric Railway opened in 1883 in Brighton, and is the oldest surviving electric railway. Also in 1883, Mödling and Hinterbrühl Tram opened near Vienna in Austria. It
12100-436: Was widely adopted throughout North America and beyond. While it was at one point in widespread use across many of the United States railroads, the system has been perhaps most prominently used in the United Kingdom . During 1971, the country's nationalised rail operation, British Rail (BR), opted to procure and integrate TOPS into its operations. The acquisition of an existing system rather than develop an indigenous programme
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